空气过剩系数:增大空气过剩系数，可以加速混合，使火焰变短，反之则混合缓慢，火焰拉长。这两种情况都有一些实际利用的例子。
Air surplus coefficient: increase the air surplus coefficient, can accelerate the mixing, make the flame shorter, and vice versa, slow mixing, flame elongated. There are some examples of practical use of these two cases.
加热炉包括有连续加热炉和室式加热炉等。金属热处理用的加热炉另称为热处理炉。初轧前加热钢锭或使钢锭内部温度均匀的炉子称为均热炉。广义而言，加热炉也包括均热炉和热处理炉。
The heating furnace c***ists of a continuous heating furnace and a chamber heating furnace. The heating furnace for metal heat treatment is also called the heat treatment furnace. Before the blooming of heating steel ingots or the internal temperature of ingot uniform called pit. Broadly speaking, the heating furnace includes furnace and heat treatment furnace.
台车式加热炉的组成包括加热炉本体和余热回收系统。余热回收系统中有一个空气预热器,空气预热器是又由非冷凝式空气预热器和冷凝式空气预热器两段组成。
The trolley heating furnace c***ists of a heater body and a waste heat recovery system. There is an air preheater in the waste heat recovery system. The air preheater is of a non-condensing air preheater and a condensing air preheater.